Re: How to reclaim inode pages on demand

[Jörn Engel <joern@wohnheim.fh-wedel.de>]

On Mon, 8 August 2005 16:52:52 +0100, Mel Gorman wrote:
> 
> I am working on a direct reclaim strategy to free up large blocks of
> contiguous pages. The part I have is working fine, but I am finding a
> hundreds of pages that are being used for inodes that I need to reclaim. I
> tried purging the inode lists using a variation of prune_icache() but it
> is not working out.
> 
> Given a struct page, that one knows is an inode, can anyone suggest the
> best way to find the inode using it and free it?

A struct page ain't an inode.  So I'm assuming you mean something like
"giving a struct page that is known to be part of the inode slab
cache".

In that case, you have to decide how intimate you want the slab code
and your page/inode reclaim code to be.  You could use slab structures
to find out the (ofs,len) tupel of contained structures, cast those
to a struct inode and then continue.  Whether you actually want that,
depends on your moral standards.

Jörn

-- 
I don't understand it. Nobody does.
-- Richard P. Feynman
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